/Engine/Plugins/Online/OnlineSubsystem/Source/Public/Interfaces/OnlineTurnBasedInterface.h
Ends the match while setting the match outcome (win/loss/tie) for all players
virtual void EndMatch ( [FEndMatchSignature](API\Plugins\OnlineSubsystem\Interfaces\FEndMatchSignature) QuitMatchCallback, [EMPMatchOutcome::Outcome](API\Plugins\OnlineSubsystem\Interfaces\EMPMatchOutcome__Outcome) LocalPlayerOutcome, [EMPMatchOutcome::Outcome](API\Plugins\OnlineSubsystem\Interfaces\EMPMatchOutcome__Outcome) OtherPlayersOutcome )